The woman, a college student in her early 20s, is in a stable condition in hospital, in Haryana state, following last week’s attack, senior police officer, Sanjay Kumar Singh, said.
After the woman was first raped, in 2013, three men were arrested. Two of them were freed on bail, pending the outcome of the trial, which is ongoing. Mr Singh said those two were among five men who gang-raped the woman last week.
The woman, from a poor family, had been raped in 2013 in Bhiwani, a town in Haryana. Her family moved to Rohtak, another town in Haryana, after they were threatened by the suspects.
The accused, who face life sentences if convicted in the first case, allegedly offered five million rupees (£56,500) to the woman’s family to drop the rape complaint, the NDTV news channel reported.
The woman told police she was gang-raped again on July 13, because she was unwilling to withdraw the case.
According to Mr Singh, the woman was abducted from outside her college in Rohtak, which is 55 miles west of New Delhi, and raped by the men.
She was then dumped at a desolate spot, and police found her unconscious and took her to hospital.
The incident highlights the persistence of violence against women in India.